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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > flash tune and jb4



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      03-31-2013, 01:47 PM   #1
stoes
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flash tune and jb4

I've been running JB4 for the past 2 years. The other day I had my mechanic flash my car with his tune. (Not sure of the software). My question is can I run the jb4 with that tune? Like on autotune?
His tune feels good, but the additional power and fuel with a little e85 has caused the fuel pump to start failing and car going into limp mode. So we backed the timing and boost down a little untill new pump gets here. We are installing the walboro tomorrow or tuesday. Assuming all goes well with the fuel pmp can I also run jb4? Even just in bypass mode to read my boost...?
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      03-31-2013, 04:09 PM   #2
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What brand tune was it? You let someone install a tune and have no idea of what it is?
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      03-31-2013, 04:49 PM   #3
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He's a professional tuner. It's his software. It has no name brand...
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